The NCTS HDMI 2.1 cable delivers ultra-high bandwidth 48Gbps with support for 8K@60Hz and 4K@120Hz, ensuring smooth, sharp, and lag-free performance. Available in 3 meters and 5 meters, it’s perfect for gaming consoles, TVs, monitors, and high-end home theater setups. The NCTS HDMI 2.1 Cable is built for next-generation video and gaming performance. With a high-speed 48Gbps bandwidth, it supports advanced resolutions like 8K at 60Hz and 4K at 120Hz, making it ideal for PlayStation 5, Xbox Series X, gaming PCs, 8K TVs, projectors, and home theater systems. Designed for stable signal transmission even at longer lengths (3M & 5M), it provides premium audio/video quality for professional and entertainment use. HDMI 2.1 Standard for next-gen video performance 48Gbps Ultra High Speed Bandwidth for smooth and stable output Supports 8K@60Hz & 4K@120Hz for ultra-clear and fluid visuals Ideal for PS5 / Xbox Series X / Gaming PC for high refresh rate gaming HDR Support for richer colors and better contrast (device dependent) eARC Support for high-quality audio transmission (device dependent) Durable Build Quality designed for long-term performance Available Lengths: 3M & 5M for flexible installation Perfect for next-gen consoles, gaming PCs, 8K TVs, 4K high refresh monitors, projectors, AV receivers, and soundbars. Ideal for users who want maximum performance for gaming, streaming, and home theater systems.
The MagSafe 3 Charging Cable delivers fast, secure, and convenient magnetic charging for compatible MacBook Pro and MacBook Air models—designed by Apple for effortless connection and optimal power delivery. Magnetic, Snap-On Design: Connects effortlessly with a strong magnet and safely detaches if tugged—helping prevent your MacBook from falling if someone trips over the cable. Compatible With: MacBook Pro (14-inch and 16-inch, 2021 and later) and MacBook Air (2022 and later models with MagSafe 3 port). Fast Charging Support: Works with compatible Apple USB-C power adapters (e.g., 67W, 96W) to enable fast charging on supported MacBooks. Reversible Connector: Plug it in either way—no need to check orientation. LED Charging Indicator: Built-in light shows charging status (amber = charging, green = fully charged). Durable Braided Cable: Reinforced for everyday use while maintaining flexibility and a premium feel. Apple-Engineered Precision: Designed to seamlessly integrate with your MacBook for reliable, efficient power delivery and optimal thermal performance. Note: Power adapter sold separately—this listing includes only the MagSafe 3 charging cabl
Genuine-spec touchpad flex cable for MacBook Air 13.6″ (Model A2681, 2022, M2)—essential for restoring full Force Touch functionality, haptic feedback, and multi-touch gesture support when replacing or repairing the trackpad assembly. Compatible With: MacBook Air 13.6-inch (2022, Model A2681) with Apple M2 chip (all colors: Silver, Space Gray, Starlight, Midnight). Part Type: Touchpad flex cable only—does not include the trackpad, Taptic Engine, or mounting hardware. This is the ribbon cable assembly that connects the trackpad to the logic board. Function: Transmits touch input, Force Touch pressure data, and haptic feedback signals between the trackpad and logic board—critical for macOS gesture recognition and Taptic Engine operation. OEM-Quality Construction: Matches Apple’s original flex circuit in length, connector type, shielding, and bend radius—ensures reliable signal integrity and long-term durability. Common Use Cases: Replacing a torn, frayed, or damaged original flex cable Completing a trackpad replacement when the original cable was compromised Repairing unresponsive or erratic trackpad behavior caused by cable failure Replacing a torn, frayed, or damaged original flex cable Completing a trackpad replacement when the original cable was compromised Repairing unresponsive or erratic trackpad behavior caused by cable failure Installation Note: Requires full bottom case disassembly and careful routing under the battery and logic board. Connectors use ZIF (Zero Insertion Force) sockets—do not force. Recommended for experienced or certified technicians only.
The MSI MAG 275CQF E18 is a 27-inch curved gaming monitor built for immersive and smooth gameplay with WQHD resolution (2560 × 1440). It delivers vibrant visuals and responsive performance for gamers seeking clarity and speed. Furthermore, its rapid panel enhances action scenes and detailed environments effectively. It features a 180 Hz refresh rate and a 0.5 ms (GtG) response time, which help reduce motion blur and improve tracking in fast‑paced games. In addition, Adaptive‑Sync support minimizes screen tearing for fluid gameplay. The Rapid VA panel produces rich colors and deep contrast. Moreover, HDR Ready technology enhances contrast and shadow detail for more realistic visuals. Anti‑Flicker and Less Blue Light technologies improve viewing comfort during long sessions. As a result, players stay focused and comfortable. The monitor also supports AI Vision, which boosts brightness and color saturation in darker scenes. In addition, HDMI™ CEC console mode improves compatibility with game consoles. Consequently, MAG 275CQF E18 provides enjoyable gaming whether on PC or console. This monitor combines high refresh performance, curved immersion, and advanced color features to enhance both competitive and casual gaming experiences. Specifications: 27-inch WQHD (2560 × 1440) curved Rapid VA panel 180 Hz refresh rate with 0.5 ms (GtG) response time Adaptive‑Sync support for smooth performance HDR Ready with Anti‑Flicker and Less Blue Light technologies AI Vision and HDMI™ CEC console mode compatibility
Porodo Gaming Wide PDX523-BK The Porodo Gaming Wide Ultra Curved Monitor has been updated with the capability and clarity you need to game at your best. It is now quicker than ever with a refresh rate of up to 165Hz. The newest Porodo Gaming monitor still features an IPS panel with 2560 x 1440 resolution. and is based upon the former slim cable management stand, offering you a streamlined. visual experience both on screen and on your desk. It is the ideal blend of style and performance. Play games without lagging and entirely get rid of input lag. Play an FPS game. or go on an adventure in a mysterious land while enjoying a variable refresh rate display that works with your graphics card. Specifications Response Time: 6.5ms Contrast Ratio: 3500:1 Surface Treatment: Anti-Glare Active Area: 697.344mm x 392.256mm Pixel Pitch: 0.2724mm x 0.2724mm Maximum Resolution: 2560 x 1440 @165Hz Backlight Type: ELED Aspect Ratio: 16:9 Panel Type: Super Speed VA Panel Size: 31.5” Diagonal The Porodo Gaming Ultra Wide Curved Monitor has been updated with the capability and clarity you need to game at your best. It is now quicker than ever with a refresh rate of up to 165Hz. The newest Porodo Gaming monitor. still features an IPS panel with 2560 x 1440 resolution and is based upon the former slim cable management stand. offering you a streamlined visual experience both on screen and on your desk. It is the ideal blend of style and performance. Play games without lagging and entirely get rid of input lag. Play an FPS game or go on an adventure in a mysterious land while enjoying . a variable refresh rate display that works with your graphics card. The Porodo Gaming Ultra Wide Curved Monitor has been updated with the capability and clarity. you need to game at your best. It is now quicker than ever with a refresh rate of up to 165Hz. The newest Porodo Gaming monitor still features an IPS panel with 2560 x 1440 resolution. and is based upon the former slim cable management stand, offering you a streamlined . visual experience both on screen and on your desk. It is the ideal blend of style and performance. Play games without lagging and entirely get rid of input lag. Play an FPS game. or go on an adventure in a mysterious land while enjoying a variable refresh rate display that works with your graphics card. Specifications: Specifications VA Curved R1500 Panel Type High Dynamic Range Anti-Glare Surface Treatment 31.5” Diagonal Panel Size 16.7M Display Color 16:9 Aspect Ratio 2560 x 1440 @165Hz Maximum Resolution 2-3 Weeks For delivery on order 1 year warranty Manufacturer Link
About this item Multifunctional: retro portable speaker, supports Bluetooth transmission, U disk, memory card, AUX (connect to MP3, MP4 player, smartphone, PC) to play music. It is easy to enjoy stereo sound for music lovers. Long battery life: the Bluetooth speaker has a built-in 1500 mAh battery, is rechargeable and environmentally friendly, and offers a battery life of 8 hours so that you can enjoy your favorite music and radio stations for a long time. CLEAR SOUND The radio speaker with a built-in powerful DSP chip and antenna ensures excellent reception, allowing you to experience clear sound. The transmitters can be easily selected to find your favorite FM channels. POWERFUL: This wireless speaker is compact, but with high power, the 5W speaker delivers powerful sound quality. Allows you to enjoy the rich and impressive sound and transform your room into an enchanting listening environment. RETRO DESIGN The small wireless FM radio speaker with charming and versatile design combines classic aesthetics and is a delightful addition to your sound collection. Perfect for living room, bedroom, party, etc.
The LG 27G810A-B 27″ UltraGear 4K UHD Gaming Monitor offers stunning visuals and high-performance gaming in a sleek, modern design. Its large 27-inch 4K UHD screen delivers sharp, detailed images, making games, movies, and creative work more immersive. Moreover, the monitor provides smooth gameplay with fast refresh rates and responsive performance, giving you an edge in competitive gaming. This monitor features excellent color accuracy and wide viewing angles, ensuring vivid visuals for both gaming and professional work. Additionally, its low response time reduces motion blur and ghosting, allowing precise and fluid action in fast-paced games. The ergonomic design allows tilt, height, and swivel adjustments, ensuring comfort during long gaming or work sessions. The LG 27G810A-B includes multiple connectivity options, supporting PCs, consoles, and other devices. Furthermore, its sleek UltraGear aesthetics make it a stylish addition to any setup. Therefore, it is ideal for gamers, content creators, and professionals seeking high performance and visual clarity. Finally, it combines immersive 4K visuals, responsive gameplay, and ergonomic comfort for a superior user experience. Specifications: UltraGear 4K UHD resolution for crisp visuals Smooth and responsive gameplay Low motion blur for fast action Ergonomic adjustments for comfort Compatible with PCs, consoles, and peripherals
Compact and stylish with a zinc alloy shell, the SatcOp 8‑in‑1 USB‑C Multiport Dock delivers essential ports—Ethernet, HDMI, USB, card readers, and charging—in one portable adapter. Ideal for powering your laptop while expanding connectivity on the go. 🖥️ HDMI Port – Connect to external displays in Full HD or 4K (depending on your host device). 🌐 RJ45 Ethernet Port – Provides stable wired internet access with gigabit-speed support. ⚡ USB-C PD Charging – Power your laptop while using other ports (up to 87W pass-through). 🔌 USB 3.0 & USB 2.0 Ports – Connect flash drives, external storage, keyboards, and mice. 💾 SD & TF Card Readers – Quick access to camera and device storage cards. 🧊 Material – Premium zinc alloy casing for durability and efficient heat dissipation. 💼 Design – Slim, lightweight, and perfect for travel, home, or office setups. 💻 Compatibility – Works with most USB-C laptops, including Windows, macOS, Chrome OS, and select Android tablets.
The MSI MAG32URDF E16 gaming monitor delivers flexible performance with dual-mode display support. It features a large 32-inch screen that adapts to different gaming needs. Therefore, users can switch between ultra-fast speed and high-resolution clarity. Moreover, the monitor supports Full HD at 320Hz for competitive gaming. This ensures smooth motion and fast response during intense gameplay. In addition, it offers 4K UHD at 160Hz for detailed visuals and immersive experiences. The panel provides sharp image quality with accurate colors and wide viewing angles. As a result, it suits both gaming and content viewing. Furthermore, adaptive sync technology helps reduce screen tearing and stuttering. Connectivity options support easy integration with modern devices. Consequently, the MSI MAG32URDF E16 gaming monitor delivers both speed and visual quality in one solution. The MSI MAG32URDF E16 gaming monitor is ideal for users who want both high refresh rates and 4K clarity in one display. Specifications: 32-inch display with dual-mode resolution support 4K UHD (3840 × 2160) at 160Hz refresh rate Full HD (1920 × 1080) at 320Hz refresh rate Adaptive sync support for smooth performance Multiple input ports for flexible connectivity
The Samsung Odyssey G3 24″ 180Hz Gaming Monitor delivers smooth gameplay with a high refresh rate. It ensures ultra-fast performance for competitive gaming. The 180Hz refresh rate reduces motion blur, making fast-paced action more fluid. Every frame appears crisp and clear, giving players an edge in fast-action games. With a 1ms response time, this gaming monitor eliminates lag and ghosting. It provides instant reactions, helping gamers stay ahead in intense battles. The quick response ensures accurate movements and smooth transitions between scenes. The Full HD 1920×1080 resolution offers sharp and detailed visuals. Every image appears clear, enhancing the gaming experience. The high contrast ratio improves depth and realism in darker scenes. Whether exploring dark landscapes or engaging in bright battlefields, the visuals remain immersive. The Samsung Odyssey G3 24″ 180Hz Gaming Monitor features AMD FreeSync Premium for tear-free gaming. It synchronizes the monitor’s refresh rate with the graphics card. This reduces screen tearing and stuttering, ensuring smooth gameplay. Even in demanding scenes, the visuals stay seamless. Designed with an ergonomic stand, this monitor offers height adjustment, tilt, and swivel options. Gamers can adjust the screen for maximum comfort during long gaming sessions. The slim bezel design creates a modern and immersive viewing experience. The monitor includes multiple connectivity options, including HDMI and DisplayPort. This ensures compatibility with gaming consoles, PCs, and other devices. The versatile connectivity makes it a great choice for any gaming setup. The Samsung Odyssey G3 24″ 180Hz Gaming Monitor is perfect for gamers seeking speed, clarity, and immersion. Its fast refresh rate, sharp visuals, and ergonomic design make it an excellent choice. Every game feels smoother, sharper, and more immersive. Specifications: Display : 24″ VA Resolution : FHD (1,920 x 1,080) Refresh Rate : 180Hz Response Rate : 1ms
The Logitech C270 is an affordable, plug-and-play HD webcam delivering 720p video and clear audio—perfect for video calls, remote learning, and everyday communication on Windows, macOS, and ChromeOS. Dual stereo microphones with noise reduction for clearer voice pickup Universal compatibility: Works seamlessly with Zoom, Microsoft Teams, Google Meet, Skype, and more Plug-and-play USB-A connection: No drivers needed—just connect and start your call Adjustable clip-on mount: Fits laptops, LCD monitors, or tripods (tripod not included) Compact, lightweight design with privacy-friendly lens cover (manual)
WiWU Infinite USB‑C to HDMI Adapter (HB004) – Sleek aluminum dongle offering 4K@60Hz output over USB‑C (DP Alt‑Mode), plug-and-play with no drivers needed.Compact, portable, and reliable—a must-have for mobile productivity, gaming, and media streaming. Model: WiWU Infinite USB‑C to HDMI Adapter (HB004) Video Output: HDMI 2.0, supports up to 4K @ 60 Hz resolution Material & Weight: Robust aluminum alloy body, compact, weighs ~69 g Compatibility: Plug-and-play connector works with USB‑C devices supporting DP Alt‑Mode—compatible with laptops, smartphones, tablets, consoles Design & Build: Slim, portable, durable—no driver/software required Use Cases: Ideal for mirroring/extending screens for presentations, streaming, gaming
The MSI MPG 491CQPX QD-OLED 49″ DQHD 240Hz Curved Gaming Monitor gives you a huge, immersive ultrawide screen for gaming and productivity. The 49-inch panel with 5120 × 1440 resolution delivers sharp, detailed imagery for games, movies, work and editing. The wide 32:9 aspect ratio offers expansive workspace and full immersive views. Moreover, the MSI MPG 491CQPX QD-OLED 49″ DQHD 240Hz Curved Gaming Monitor features a very fast 240 Hz refresh rate. This high refresh makes motion smooth and fluid during fast games and action scenes. With a 0.03 ms GtG response time, visuals stay sharp and input feels responsive. This reduces motion blur and keeps gameplay crisp. In addition, the monitor uses a QD-OLED panel with deep contrast and rich colors. Blacks are deep, colors pop, and images look vivid under different lighting. Furthermore, the MSI MPG 491CQPX QD-OLED 49″ DQHD 240Hz Curved Gaming Monitor supports adaptive sync (G-Sync compatible) to prevent screen tearing. It also supports HDR with high peak brightness for richer highlights. This makes games, movies, and graphics feel more dynamic and realistic. Also, connectivity is modern and versatile. You get HDMI 2.1 and DisplayPort 1.4 for high refresh output, plus USB-C with power delivery for convenience. The monitor’s stand offers tilt, swivel, and height adjustments for a comfortable setup. The sleek design and slim bezels give a clean, premium look. Overall, the MSI MPG 491CQPX QD-OLED 49″ DQHD 240Hz Curved Gaming Monitor blends size, speed, and image quality into one impressive display. It enhances gaming performance, boosts productivity, and elevates media consumption. This monitor is ideal for gamers, creators, and multitaskers who want top-tier visuals and immersive experience. Specifications: Display : 49″ QD-OLED Resolution : 5120 x 1440 (DQHD) Refresh Rate : 240Hz Response Time : 0.03ms Curvature : 1800R
Battery Model: A1582 A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 ; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 Battery Model: A1582 A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 ; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 100% Brand New, Battery Type: Li-Polymer; Capacity: 71.8Wh; Voltage:11.34V; Package include two free screwdriver Compatible:A1502 A1493 (Only for Late 2013, Mid 2014 Version) Apple MacBook Pro 13″ Retina ME864LL/A ME866LL/A ,MacBook Pro “Core i5″ 2.4/2.5 13” Late 2013 Retina Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety.
The Samsung 32DM801 32″ M8 UHD 4K Smart Monitor is a stunning addition to any workspace or entertainment setup. This 32-inch UHD monitor brings impressive 4K resolution, delivering crisp, lifelike visuals that elevate your viewing experience. Designed with versatility in mind, the Samsung M8 Smart Monitor is perfect for both work and play. The large 32-inch display provides ample screen space for multitasking, making it ideal for professionals. The 4K UHD resolution enhances clarity, allowing you to view documents, images, and videos with fine detail. The Samsung 32DM801 32″ M8 UHD 4K Smart Monitor is also a smart entertainment hub. With built-in streaming apps like Netflix, YouTube, and Apple TV, you can enjoy your favorite shows without needing an external device. The monitor has speakers integrated for an immersive audio experience, so you don’t have to worry about extra equipment. This monitor’s sleek and slim design fits perfectly into any modern setup. It comes with a height-adjustable stand that lets you customize the screen position to reduce strain on your neck and eyes. With USB-C connectivity, you can quickly connect devices and charge them, making it a convenient all-in-one solution. Setting up the Samsung 32DM801 32″ M8 UHD 4K Smart Monitor is simple. The smart monitor is compatible with multiple devices and operating systems, providing seamless functionality. For anyone looking to upgrade their workspace or home entertainment, this monitor combines functionality, style, and quality. Specifications: Display : 32″ VA Panel Resolution : 4K (3,840 x 2,160) Refresh Rate : 60Hz Response Rate : 4ms GTG
Looking for a reliable monitor that combines performance and affordability? The BenQ GW2780 monitor might be your perfect choice, offering an array of features to enhance your visual experience. To begin with, the GW2780 boasts a sleek design that seamlessly blends with any workspace. Its slim bezels create a borderless display, providing an immersive viewing experience for work or entertainment. Equipped with a 27-inch Full HD display, the monitor delivers crisp and clear visuals. Whether you’re working on spreadsheets, watching videos, or gaming, the GW2780 ensures sharp images and vibrant colors. The In-Plane Switching (IPS) technology ensures wide viewing angles, allowing you to enjoy consistent colors and brightness from any angle. Say goodbye to distorted colors and limited viewing positions. Eye strain is a thing of the past with the BenQ GW2780. The Low Blue Light technology reduces harmful blue light emissions, and the flicker-free feature eliminates screen flickering, providing a comfortable viewing experience for extended periods. Connectivity is a breeze with the multiple ports, including HDMI and VGA. Easily link your monitor to various devices such as laptops, desktops, and gaming consoles. The user-friendly design ensures a hassle-free setup. The BenQ GW2780 monitor not only prioritizes performance but also energy efficiency. Energy Star certification reflects its commitment to reducing environmental impact, making it an eco-friendly choice. In summary, the BenQ GW2780 monitor offers a winning combination of affordability and top-notch features. Elevate your viewing experience with this reliable display solution that caters to your entertainment and productivity needs effortlessly. Specifications: Display : 27″ IPS Resolution : 1920×1080 IPS Response Time : 5ms Refresh Rate : 60hz
The ViewSonic 32″ 2K 165Hz Gaming Monitor takes your gaming to the next level. Enjoy stunning visuals and immersive gameplay with this high-performance monitor. With its 32-inch screen size and 2K resolution, the ViewSonic monitor delivers crisp and clear images. Whether you’re playing fast-paced games or watching movies, the picture quality is exceptional. The 165Hz refresh rate ensures smooth and fluid motion, reducing motion blur and providing a competitive edge in gaming. Experience fast action scenes with remarkable clarity. The ViewSonic 32″ 2K 165Hz Gaming Monitor features Adaptive Sync technology, eliminating screen tearing and stuttering for a smoother gaming experience. Enjoy seamless visuals without any distractions. Designed with gamers in mind, this monitor offers customizable settings to enhance your gaming experience. Adjust the settings to match your preferences and enjoy personalized gameplay. The ergonomic design of the ViewSonic monitor allows you to tilt, swivel, and adjust the height for optimal viewing comfort. Spend hours gaming without experiencing discomfort. With its vibrant colors and wide viewing angles, the ViewSonic 32″ Gaming Monitor provides an immersive visual experience. Enjoy consistent colors and details from any angle. Connectivity is made easy with multiple input options, including HDMI and DisplayPort. Connect your gaming console, PC, or other devices effortlessly and switch between them as needed. In conclusion, the ViewSonic 32″ 2K 165Hz Gaming Monitor offers an exceptional gaming experience with its stunning visuals, smooth performance, and customizable settings. Upgrade your gaming setup today and immerse yourself in the action. Specifications: Display : 32″ IPS Resolution : 2K (2560 x 1440) QHD Refresh Rate : 165Hz Response Rate : 0.43ms
The ACER Nitro ED320QR 32″ Monitor delivers immersive and smooth visuals for gaming, work, and entertainment. It features a 32-inch Quad HD display that shows crisp details and vibrant colors. Moreover, its high refresh rate ensures fluid motion during fast-paced games and videos. This monitor uses a VA panel for strong contrast and wide viewing angles. Additionally, the fast response time reduces blur and ghosting during competitive gaming. The anti-glare screen minimizes reflections in bright rooms. HDMI and DisplayPort inputs allow easy connection to PCs, laptops, and consoles. Furthermore, tilt adjustment helps you find a comfortable viewing angle during long sessions. Low blue light and flicker-free technologies reduce eye strain during extended use. This display is suitable for gamers, professionals, and home users alike. Therefore, it supports gaming, multimedia, and productivity tasks. Finally, it combines sharp visuals, smooth performance, and comfort features for daily use. Specifications: Screen Size: 32″ Quad HD VA panel Resolution: 2560 × 1440 Refresh Rate: High for smooth motion Ports: HDMI + DisplayPort Features: Anti-glare, low blue light, flicker-free eye care
Acer V247YBIV 24 inch Monitor SIZE 1920 x 1080 BRAND Acer DIMENSION 24″ SPEED 4ms MISC Wide 3 Years Warranty
The BenQ Zowie 24″ 144Hz Gaming Monitor is designed for competitive gamers seeking smooth and responsive gameplay. With a 144Hz refresh rate, it reduces motion blur and ensures fluid visuals, giving players a competitive edge. As a result, fast-paced games feel more precise and immersive. Equipped with an optimized response time, this monitor minimizes input lag, allowing accurate control for first-person shooters, MOBAs, and action games. In addition, its 24-inch panel delivers vivid colors and sharp details, enhancing both gaming and multimedia experiences. The ergonomic design includes height, tilt, and swivel adjustments, providing comfortable viewing during long sessions. Furthermore, the monitor features low blue light and flicker-free technology, reducing eye strain over extended playtime. Connectivity is versatile with DisplayPort and HDMI options, making it compatible with PCs and consoles alike. Moreover, the monitor’s minimalist design complements any gaming setup without distractions. Therefore, it suits both professional eSports players and casual gamers who demand performance and reliability. Overall, the BenQ Zowie 24″ 144Hz Gaming Monitor balances speed, visual clarity, and ergonomic comfort, making it a top choice for competitive and everyday gaming. Specifications: Display : 24″ Resolution : FHD Refresh Rate : 144Hz
